A Survey of Indoor Radon - 222 levels in Kassala town

Abd-Elmoniem A. Elzain, Adam K. Sam, Othman M. Mukhtar, Mustafa A. Abbasher

Abstract


Passive integrated soild state nuclear track detectors were used to study the indoor radon-222 concentrations in 285 measurements in Kassala town, eastern Sudan. The influence of some factors e.g. type of building materials, geometrical shape of the measurement place, the position of the house, ect, on indoor radon concentration were studied. The measuerment of the indoor radon concentration obtained in the town ranged (from 27.14 to 384.00) Bq/m3, with an average of (92.38 ± 8.09) Bq/m3, which is far below the level recommended by ICRP, and higher than the world-wide, population weighted, average radon as reported by UNSCEAR publications. The corresponding average annual effective dose is 2.31 mSv/y, which is lower than the action level range as recommended by ICRP. The relative lung cancer risk for radon exposure of Kassala town populations indoors would be about 1.084%.

Keywords: Radon; Indoor radon concentration; CR-39; Kassala town.

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